If you buy your boots big for winter socks, then struggle with the extra space, these volume adjuster insoles are an ideal solution. They are flexible and rubbery for comfort under foot, and flat in design to fit any shoe or foot shape. A great companion if you often struggle with larger shoe or boot sizes, or have particularly narrow feet. FeaturesA pair of volume-reducing insoles suitable for walking shoes or bootsSoft and flexible - providing cushioning underfoot.Flat in design - to fit any foot shape.Fit inside shoes or boots - to give a snugger, more secure fit with less slipping.